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Morphological and molecular variation in natural populations of Betula
Author(s) -
HOWLAND D. E.,
OLIVER R. P.,
DAVY A. J.
Publication year - 1995
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1995.tb01821.x
Subject(s) - biology , betula pendula , ploidy , restriction fragment length polymorphism , rapd , betula pubescens , botany , betulaceae , population , population genetics , natural population growth , genetics , gene , genotype , genetic diversity , demography , sociology
summary Molecular variation within morphologically variable natural populations of Betula pendula Roth, (diploid) and Betula pubescens Ehrh. (tetraploid) was investigated using RFLP and RAPD techniques. RFLP analysis of rDNA showed a high degree of polymorphism within and between individuals of both cytotypes in spacer length variation. Analysis of randomly amplified genomic DNA fragments, within one population, showed little differentiation between cytotypes. In East Anglian populations, diploid and tetraploid Betula are distinct neither on the basis of morphological nor molecular characters.